1: (0 2 12)

(0)(1 10 9)(2 19 16 14 12 21 8 6 4)(3 20 5)(7 13 11)(15 18 17)

2: (8 12 21)

(0)(1 10 9)(2 19 16 14 12 6 4)(3 20 5)(7 13 11)(8)(15 18 17)(21)

3: (7 13 11)

(0)(1 10 9)(2 19 16 14 12 6 4)(3 20 5)(7)(8)(11)(13)(15 18 17)(21)

4: (6 19 12)

(0)(1 10 9)(2 19 4)(3 20 5)(6)(7)(8)(11)(12 16 14)(13)(15 18 17)(21)